Lock for bicycles



No. 624,949. Paiented may is, m99.

L. T. LAPAusH. l

LOCK FOR BICYCLES.

' (Application mea me. 1e, 189s.)

(No Model.)

JNVENT off NITED STATES PATENT OEEICE. v

LOUIS T. IJAPAUGH, OF UTICA, NEW YORK.

LOCK FOR BICYCLES.

SPECIFICATION forming part of Letters Patent N o. 624,949, dated May 16, 1899,.

Application filed December 16 1898. Serial No. 699,511. (No model.)

To rtZZ whom t may concern:

`Be it known that 1, LoUIs T. LAPAUGH, of Utica, in the county of Oneida and State of New York,have invented certain new and useful Improvements in Locks for Bicycles; and I do hereby declare that the following-is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the gures of reference marked thereon, which form part of this specication.

The object of my present invention is to provide in that class of locks for bicycles which are applied to the front fork of the bicycle and are adapted to engage directly with the wheel and prevent its rotation a lock which is constructed and arranged to be readily and easily operated, particularly in the locking movement.

In the drawings, Figure 1 shows a portion of a bicycle having my improved lock applied thereto. Fig. 2 shows a plan view of the lock. Fig. 3 shows a side View in connection with a portion of the fork. Fig. 4 shows a front view also in connection with a portion of the fork. Fig. 5 shows abottomview of the lock. Fig. 6 shows a horizontal sectional view showing the locking mechanism in the locked-position. Fig. 7 is a similar section showing the lock in an unlocked position, but not in what might be called' the completely unlocked or set position. Fig. 8 shows the lock in the unlocked or set position. Fig. 9 shows a partial vertical section of the lock in the locked position. Fig. 10 shows a longitudinal section of that portion of the lock which receives the wheel-bolt in connection with the The clamping part 5 is secured to the downwardly-projecting'portion 3n of the casing by screws 6 6, passing through the part 3a and the angular end ot the part 5. The clamping .part 4 is also secured to the part 3 by a set-screw 7, having an enlarged angular head. The projecting ends lof the clamping parts 4 and 5 are arranged to interlock, as-

shown at 8, and may be further held by a transverse screw or bolt 9. The arrangement of all these parts is such that the lock can by means of the clamp be firmly and rigidly secured to one arm of the front fork of the bicycle.` v

At one side the lock-casing 3 is provided with a transverse enlargement 3b, which is provided with a longitudinal hole or opening receiving the wheel-bolt 10. The bolt 10 is reduced at one end, which reduced end receives the spring 11, the spring being confined between the shoulder 10a on the bolt l0 and the shoulder 3 at one end of the opening in the part 3b. On the end of the reduced portion of the wheel-bolt 10 there is provided a head 10b.

In ways in the bottom of the casing 3 and at right angles to the Wheel-bolt 10 is arranged the locking-bolt 12, adapted to slide in the ways and actuated in one direction by the spring 13. A portion of the bolt 12 is adapted to pass through the opening 14 transverse to the wheel-bolt 10. The locking-bolt 12 is, under certain conditions, secured by the tumbler 15, which is operated to slide freely between the projections 16 16 on the casing, and the tumbler 15 is operated into itsv lock ing positionl by the spring 1 7. The web por@ tion 15a of the tumber 15 is adapted to en'- gage in the notch or recess 18 in the bolt 12 when in locked position. In a projecting lug or ear 19 on the interior of the casing is mounted the small sliding catch 20, operated or held by a spring 21. The catch 2O is adapted to engage with the hook 12a on the rear end of the locking-bolt 12 and secure it in retracted position against the tendency of the spring 13 to impel it toward position shown in Fig. b'. The side of the projection 12n on the end of the bolt is made rounded or inclined' to easily ride over the projecting end of the catch 20 and force it to retire when the lock-f ing-bolt 12 is operated. At a suitable point IOO Within the case is arranged the rotatable keyboss 22, having a notch, as shown, adapted to receive the key. Projecting to a point within the sweep of the key-bit 23 is a projection upon the catch 20, and there is also provided in the side of thelocking-bolt 12 a notch or recess 24, which receives the bit of the key as it is rotated in the lock. 0n one end of the barrel portion 3" of the lock-casing is provided an arm or extension 25, which has a tip on the end adapted to be received in a corresponding recess in the side of the eccentric head 10b of the wheel-bolt when the head is rotated into a dependentposition, as shown in Fig. 10.

The operation of the device is substantially as follows: Starting with the lock in the position shown in Figs. 1, 2, 4, 8, and 10 it will be noted in the iirst place that the end of the locking-bolt 12 is in contact with the side of the wheel-bolt 10, and the locking-bolt 12 is held against the tendency of the spring 13 to force it to the left, as shown in Fig. 8, by the bolt 10. The operator taking hold of the head 10b of the bolt 10 draws it to the right, as the parts are shown in Figs. 10 and 1l, and disengages the head from the projecting tip 252. He then rotates the head 10b and with it the bolt 10, so that the enlarged portion of the eccentric head extends upwardly instead of downwardly and so that the bolt 10 is free to be moved by the sping 1l, while the same is not held by the projection 25. One side of the eccentric head 10 lits closely against the side of the lock extension 25, so that the bolt is held from rotation when in its projected or extended position, as shown in Fig. 11. When the wheel-bolt 10 is forced to the left, as the parts are shown lin Figs. 10 and 11, so that the notch 10 in the side of the bolt 10 registers with the bolt 12, the said locking-bolt 12 is forced by the spring 13 through the notch 10LL and into a position so that the projecting end of the bolt l2 engages with one side of the head of the screw 7, locking the screw 7 as well as the bolt 10. The movement of the locking-bolt 12 in the direction just described is limited by the shoulder 12b thereof coming in contact with the inner side of casing. The locking-bolt 12 is locked by the projecting wall 15L of the sliding tumbler engaging in the notch 18 in the side of the lockingbolt.

It may be here mentioned that the relative arrangement of the wheel-bolt 10 and the wheel of the bicycle is such that when the bolt 10 is projected it will engage with the spokes of the wheel and prevent the wheel being rotated. It is obvious, however, that an opening or eye might be provided ou the rim of the bicycle with which the wheel-bolt 10 would engage and prevent the rotation of the wheel, even in a slight degree.

To unlock the bolt, the key is placed in the keyhole-opening in the casing, as shown, with the back of the key in the rotating boss 22 and the bit portion projecting therefrom.

The keyvis then rotated in the direction indicated by the-arrow in Figs. G and 7. The bit of the key first engages the tumbler 15 and moves it against the tension of the spring 17, so that the wall 15a becomes disengaged from the notch 18 in the locking-bolt. The bit of the key then engages in the notch 24 in the locking-bolt 12 and forces the locking-bolt to.

ward the right, as the part-s are shown in Figs. 6 and 7, against the tension of the spring 13. The inclined rear end of the locking-bolt 12 forces the projecting end of the catch 20 back into the projection 19, and after the hooked end 12a thereof has passed the said catch 20 the catch is forced into engagement with the hooked end 12 by the spring 2l and the locking-bolt 12 is secured in retired position.y At this point the key is allowed to stop, and it will be noted that the wheel-bolt 10 is then unlocked, and the operator taking hold of the head 10b withdraws the same and rotates the bolt into proper position and engages it on Athe end of the extension 25 in the position shown in Fig. 10. The key is then rotated farther and in its movement engages with the arm or extension of the catch 2O and moves the same to disengage the bolt 12, which is immediately forced to the left, as the parts are shown in Figs. 6, 7, and 8, so that the end of the locking-bolt 12 comes into engagement wit-h the side of the wheel-bolt 10. The key is then removed and the lock is set ready to be operated again, as before described.

It will be noted that in order to remove the lock from the bicycle-frame, it is necessary to take out the screw 7, and that this screw is held by the projecting end of the lockingbolt 12 when the lock is in locked position.

It is evident that other modifications and changes than those herein described may be made without departing from the spirit of my invention.

What I claim as new, and desire to secure by Letters Patent, is-

1. In a lock for bicycles, a casing having a transversely-arranged wheel-locking bolt adapted to have its end projected from the casing and having a recess in its side, a lockingbolt arranged within the casing and adapted to engage the wheel-bolt in said recess, a tumbler for securing said locking-bolt, and a keyoperated catch also for securing said lockingbolt in unlocked position, substantially as set forth.

2. The combination in a bicycle-lock of a casing, a sliding wheel-locking bolt mounted in said casing one end of which is adapted to be projected into engagement with the wheel and the other end provided with an eccentric head adapted to be rotated into engagement with a case extension and secure the bolt in unlocked position,a spring for projecting said wheel-bolt, and mechanism in said casing for securing said bolt in locked position, substantially as set forth.

3. The combination in a bicycle-lock of the wheel-bolt 10 having a recess in its side, the

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said extension 25, a spring for operating said' bolt l0, and a locking-bolt adapted to secure said bolt l0 by engaging in a recess therein in locked position or said locking-bolt heldin check by engaging with the side of the said bolt l0 When in unlocked position,and a spring for operating said locking-bolt, substantially as set forth.

5. The combination in a bicycle-lock of a casing, a sliding wheel-bolt 10 extending from either side of said casing and having a plain side and a notch or securing-shoulder thereon, a spring for projecting said bolt, means for securing the bolt in open or unlocked position against the tension of said spring, a locking-bolt Within the casing adapted to engage With said notch or shoulder on the said- Wheel-bolt 10, a tumbler for securing said -locking-bolt, a catch for securing said locking-bolt in unlocked position, and a key for operating the tumbler, locking-bolt, and boltcatch, substantially as set forth.

In witness whereof I have affixed my signature, in presence-of two Witnesses, this 12th day of December, 1898.A

LOUIS T. LAPAUGH.

Witnessesi E. WILLARD JONES, SARAH A. BROWN. 

